In my opinion the power supply would probably be the first thing to upgrade. It's a pre-built you get garbage power supplies. You put any of those in there and more than likely the power supply won't handle it, it'll probably kill itself a week to 2 later and take out other parts since it's a cheapo. It looks like an ATX power supply, so i'd get a corsair 430Watt power supply so you can actually power the video cards.
Newegg.com - CORSAIR Builder Series CX430 V2 430W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply
You would probably be fine with the one you got, but i just don't trust generic power supplies, especially one's that don't even give details besides, "300 watts." That's good and all, but how do i know who's it even from? Could be made from area 51, a company that's not even around to make power supplies in the first place.
By the way, unless you got a 64-bit OS, you won't get more than 4 anyhow. Go into control panel, then system, and scroll down. It'll literally say, "32-bit Operating System" or "64-bit Operating System." If you don't have a 64, you'll be stuck with 4GB at most.
the other thing to consider is the fact your motherboard's pci-e 1.0... If you get a pci-e 2.0 card, it'll have to downclock to run as fast as the old slot. You won't get 100% of the performance, but would probably still be better off than a 1.0 card, since there's no many "good" ones around.
Oh, and it's best to buy from newegg in my opinion from the places you linked. Great support, fast shipping, and easy returns with good prices. It will save yourself a lot of headaches. I've never had to worry about problems when buying from them. And if you're still able to get a video card, here's the one I'd recommend on a tight budget. It all you'll do is offload the work from the integrated, and browse the web etc, it'll be fine. Doesn't sound like you need a big beast of a card. I just don't trust cheapo power supplies and aftermarket video cards, to many problems might occur. Call me paranoid, but if my power supply dies, i'll be sure it's the ONLY thing that dies, and the LAST thing to die. (Uhh, my text got stupid on me. It keeps hyperlinking a non hyperlink. Ignore this text.
Newegg.com - EVGA 512-P3-1311-KR GeForce 210 512MB 32-bit DDR3 PCI Express 2.0 x16 HDCP Ready Video Card
- Looks like we picked out the same card. I didn't even see that until i looked up again.
Originally Posted by ak47kgb
oh another by the way, I'm doing some video editing. Not high end, but modest-intermediate (Sony Vegas Pro)
I don't video edit ever, but i don't think it's gpu heavy as much as ram/cpu, like other applications. But that's just a guess.